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Nexperia USA Inc. BUK7608-55A,118
- Part No.:
- BUK7608-55A,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
BUK7608-55A,118.pdf
- Description:
- MOSFET N-CH 55V 75A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:5,612
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Product details
Overview
BUK7608-55A from Nexperia is a standard-level N-channel TrenchMOS FET in D2PAK (SOT404) package, rated for 55 V VDS, 75 A continuous drain current at Tmb = 25 °C, and 175 °C junction temperature. It delivers 6.8 mΩ RDS(on) at VGS = 10 V and Tj = 25 °C, and is AEC-Q101 qualified for automotive critical power switching applications including solenoid, lamp, and motor control in 12 V/24 V systems.
For engineers reviewing the BUK7608-55A datasheet, BUK7608-55A pinout, BUK7608-55A application, or BUK7608-55A equivalent, this page provides verified thermal resistance (Rth(j-mb) = 0.59 K/W), avalanche energy rating (670 mJ), gate charge profile (QG(tot) = 76 nC), and mounting-base–referenced SOA limits - all essential for thermally constrained automotive PCB layout and robustness validation.
Technical Context
This MOSFET uses TrenchMOS technology to achieve low conduction loss and high thermal resilience. Its standard-level gate drive compatibility (VGS(th) = 2–4 V typ., 1 V min. at Tj = 175 °C) enables direct interface with 5 V microcontrollers and automotive logic without level-shifting. The integrated source-drain diode supports freewheeling in inductive loads.
The device features unclamped inductive switching ruggedness (EAS = 670 mJ), low internal inductances (LD = 2.5 nH, LS = 7.5 nH), and a safe operating area bounded by package-limited current (75 A) and junction temperature (175 °C). Thermal resistance from junction to mounting base is 0.59 K/W, enabling high-power dissipation when mounted on copper heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V maximum drain-source voltage - defines absolute upper limit for blocking capability in 24 V automotive systems with load-dump transients. |
| RDS(on) | 6.8 mΩ typical at VGS = 10 V, ID = 25 A, Tj = 25 °C - determines conduction loss (Pcond ≈ I² × RDS(on)) in steady-state switching. |
| ID (continuous) | 75 A at Tmb = 25 °C - package-limited current rating; derates to zero at Tmb = 175 °C per Figure 1. |
| EAS | 670 mJ non-repetitive avalanche energy - quantifies single-pulse inductive turn-off robustness without external snubbers. |
| Rth(j-mb) | 0.59 K/W - thermal resistance from silicon junction to mounting base; enables ~427 W theoretical max power at ΔT = 250 K with active heatsinking. |
| QG(tot) | 76 nC total gate charge - directly impacts gate driver power requirement and switching speed in PWM applications. |
| VGS(th) | 2–4 V typical at Tj = 25 °C - ensures reliable turn-on with standard 5 V logic while maintaining noise immunity at elevated temperatures. |
Pinout & Package
Package: D2PAK (SOT404), plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base electrically connected to drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Gate (G) | Control terminal; requires ≥10 V for full enhancement; threshold range 1–4.4 V across temperature. |
| 2 | Drain (D) | Main high-side power terminal; internally bonded to mounting base; not externally accessible per datasheet note [1]. |
| 3 | Source (S) | Power return path and reference for gate drive; forms common node with load ground in low-side switch configuration. |
| Mounting Base (mb) | Drain (D) | Electrically tied to drain; serves as primary thermal path and mechanical anchor; must be soldered to large copper area for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive safety-critical use, including extended temperature cycling and humidity testing per JEDEC standards. |
| 175 °C maximum junction temperature | Enables operation in under-hood environments where ambient exceeds 125 °C, reducing need for derating or forced cooling. |
| Low RDS(on) at high temperature | 16 mΩ max at Tj = 175 °C - maintains efficiency in hot conditions where many MOSFETs degrade >2× in on-resistance. |
| Standard-level gate drive | Turns fully on with 10 V logic; compatible with 5 V MCU GPIO and automotive power management ICs without gate drivers. |
| Unclamped inductive switching ruggedness | 670 mJ EAS - allows safe interruption of high-current inductive loads (e.g., fuel injectors, HVAC blowers) without external clamping diodes. |
Applications
| Automotive Body Control Module (BCM) | 12 V/24 V DC Motor Driver |
|---|---|
Use Scenario: Switching door locks, window lifters, and seat adjusters in modern BCMs with centralized power distribution. IC Role / Device Role / Timing Role: Low-side power switch controlling resistive and inductive loads up to 75 A peak, with fast turn-on/turn-off for PWM dimming and position control. Use Value: 6.8 mΩ RDS(on) minimizes heat generation in compact modules; AEC-Q101 compliance ensures field reliability over 15-year vehicle lifetime. |
Use Scenario: Driving brushed DC motors in radiator fans, power steering pumps, and HVAC blowers. IC Role / Device Role / Timing Role: High-current half-bridge low-side switch; handles 504 A pulsed peak current during motor stall conditions. Use Value: 670 mJ avalanche energy rating absorbs back-EMF spikes during abrupt motor shutdown, eliminating need for discrete TVS protection. |
| Truck Lighting Load Control | Industrial Solenoid Actuator |
Use Scenario: Managing high-power LED headlamps and fog lamps in commercial vehicles with 24 V nominal supply. IC Role / Device Role / Timing Role: Constant-current or PWM-controlled power switch with thermal foldback via mounting-base temperature sensing. Use Value: 0.59 K/W Rth(j-mb) enables direct thermal coupling to chassis, supporting sustained 50 A operation without heatsink in ventilated enclosures. |
Use Scenario: Controlling hydraulic and pneumatic solenoids in agricultural machinery and construction equipment. IC Role / Device Role / Timing Role: Robust inductive load switch with integrated body diode for freewheeling; withstands repeated 100 A inrush currents. Use Value: 175 °C Tj rating permits operation in sealed, high-ambient-temperature valve manifolds without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP75NF75 | 75 V VDS, 75 A ID, RDS(on) = 10.5 mΩ @ 10 V, TO-220 package, no AEC-Q101 qualification | Higher voltage margin but larger footprint and no automotive qualification; suitable for industrial-only designs | Select if 75 V blocking is required and AEC-Q101 is not mandated; avoid in automotive production due to missing qualification. |
| IRFB4115PBF | 150 V VDS, 115 A ID, RDS(on) = 5.8 mΩ @ 10 V, TO-220 package, AEC-Q101 qualified | Higher voltage/current ratings but higher QG (120 nC) and larger thermal resistance (Rth(j-c) = 0.95 K/W) | Choose only when 150 V blocking or >75 A current is needed; otherwise over-specified and less thermally efficient than BUK7608-55A in D2PAK. |
Compared with STP75NF75 and IRFB4115PBF, the BUK7608-55A offers optimal balance of automotive qualification, D2PAK thermal performance (0.59 K/W), and gate-drive simplicity - making it preferred for space-constrained, thermally demanding 12 V/24 V automotive switches where 55 V blocking suffices.
Availability
BUK7608-55A is available at Aetrix Electronics and suitable for automotive body control modules, 12 V/24 V DC motor drivers, and industrial solenoid actuators requiring stable component supply, long-term lifecycle support, and traceable sourcing for Tier-1 OEM programs.
Supply support for BUK7608-55A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete, logic, and MOSFET solutions, with leadership in automotive-grade components and advanced packaging.
The BUK7608-55A belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for robust, thermally efficient switching in harsh-temperature automotive subsystems such as lighting, HVAC, and chassis control.
FAQ
Is BUK7608-55A suitable for high-frequency PWM switching?
Yes - with QG(tot) = 76 nC and fast switching times (td(on) = 24 ns, tr = 94 ns), it supports PWM frequencies up to 100 kHz in motor control and LED dimming. However, switching losses increase above 50 kHz; thermal design must account for combined conduction and switching dissipation using the provided SOA curves.
What is the role of the mounting base in thermal management?
The mounting base is electrically connected to the drain and serves as the primary thermal conduction path from junction to PCB or heatsink. With Rth(j-mb) = 0.59 K/W, it must be soldered to ≥10 cm² of 2 oz copper with thermal vias to achieve rated 75 A current; insufficient copper area causes rapid thermal derating.
Can BUK7608-55A replace older BUK7508-55A in existing designs?
Yes - BUK7608-55A supersedes BUK7508-55A with identical pinout, package, and electrical specifications. The revision separates the part number from the dual-type data sheet and updates formatting; no design changes or requalification are required for drop-in replacement.
Does the internal source-drain diode support bidirectional current flow?
No - the intrinsic body diode conducts only from source to drain (anode = source, cathode = drain). It is optimized for unidirectional freewheeling in low-side switch configurations. Reverse conduction (drain-to-source) is blocked, and the diode is not rated for continuous reverse recovery stress beyond datasheet-specified conditions (e.g., 65 ns trr, 170 nC Qr).
BUK7608-55A,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 55 V
- Current - Continuous Drain (Id) @ 25°C:
- 75A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 8mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 76 nC @ 0 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 4352 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 254W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
BUK7608-55A,118 FAQ
1.How can I place an order for BUK7608-55A,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7608-55A,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BUK7608-55A,118 reliable?
The price and inventory of BUK7608-55A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7608-55A,118 is usually 5 days.
3.What payment methods are accepted for BUK7608-55A,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7608-55A,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7608-55A,118?
BUK7608-55A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7608-55A,118 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BUK7608-55A,118?
For technical support, including BUK7608-55A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7608-55A,118 requirements.
6.How does Aetrix verify that BUK7608-55A,118 is sourced from the original manufacturer or authorized distributors?
All BUK7608-55A,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BUK7608-55A,118 meets industry standards.
7.What is the process for return or replacement of BUK7608-55A,118?
All BUK7608-55A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7608-55A,118, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BUK7608-55A,118 part is unused and in its original packaging.
Return procedure for BUK7608-55A,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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